your best bet and your cheapest bet is to fill it up and go for a drive on the highway and open that up(if you know what I mean
) let the carbon deposits get cleaned out and let her breathe. then go directly to the emissions place. I heard that from one of the emissions dudes. the most common mistake is people that dont pass is that they let the car sit in the driveway and head to the test without cleaning the lines out. hope this helps
h: